In the state that has proudly called itself the nation’s breadbasket, the problems of poverty — including hunger, homelessness and mental illness — reach farther into classrooms than many Kansans might expect or care to believe. In hundreds of public schools across the state, there are students that each Friday — or before holidays — are sent home with “backpacks” or “kits” of donated food put together by volunteers to be sure the children will have something to eat until they return to class the next school day.